Best Electric Foot Warmer

Hotronic FootWarmer S4 Universal
  • Keep the soles of your feet toasty warm with these shoe inserts
  • Reliable, durable, and provide great battery life!
  • Suitable for active, recreational, outdoor, and indoor use
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Heated insole inserts to keep the underside of your feet warm, lightweight, one size fits all, easy to install in your boots and shoes, can be used with any footwear, four heat settings, great battery life, durable

Only heat the underside of your feet, steep learning curve



Instead of heating socks, these are shoe inserts that provide heating to the underside of your feet. They're lightweight and slim enough to be inserted into any shoe without adding extra weight, and they'll be comfortable no matter what type of activity you're engaged in. They're built for active use, but they're just as comfy inside your business shoes and house slippers.

The inserts are made for easy installation, and you can slip them in and out of your shoes as simply as any other insert. Great if you have multiple pairs of shoes you'll use every day!


The inserts come with a built-in heating element that runs off S4 Power Plus Battery Packs. Each set comes with 2 inserts, 2 battery packs, and one charger. Plus, the battery packs have two cells each, delivering up to 6 hours of use before needing to be recharged.

The heating element focuses on warming the underside of your feet, making them the perfect addition if you've already got heated socks keeping your toes toasty warm.


At $200, these are definitely on the pricier side of things. However, they're suitable for any type of footwear and activity, making them a good investment if you're prone to cold feet while playing, lounging, and working.


Faveable Giveaway: $100 Amazon Gift Card

Amazon Gift Card

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